They also took part in the DFB Pokal, Germany's top club knockout competition, where they reached the semifinals before being eliminated on penalties by fellow Bundesliga side Bayern Munich.
Review and events
Borussia opened the 2011–12 Bundesliga season with a 1–0 victory against Bayern Munich.[1] This was their first victory against Bayern in Munich in 16 years.[1] In April, masked supporters of 1. FC Köln attacked a bus with Mönchengladbach supporters on it.[2] This was the second attack within a six-week period that Köln supporters attacked a bus with Mönchengladbach supporters on it.[2]